To change an input file written in a foreign language to your favorite language use \include "…language….ly"
and \displayLilyMusic { \melody }
.
The translation is by default written to the log; you can redirect this output to a file of your choice using the command lilypond.exe >yourfile.ly
(with windows).
The result of the snippet will be in absolute pitch:
{ c8 d e f g a b c | cflat dflat eflat fflat gflat aflat bflat cflat | csharp dsharp esharp fsharp gsharp aflat bsharp csharp | \bar "|." }